Topological active matter

Suraj Shankar, Anton Souslov, Mark J. Bowick, M. Cristina Marchetti, Vincenzo Vitelli

Research output: Contribution to journalReview articlepeer-review

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Abstract

In active matter systems, individual constituents convert energy into non-conservative forces or motion at the microscale, leading to morphological features and transport properties that do not occur in equilibrium and that are robust against certain perturbations. In recent years, a fruitful method for analysing these features has been to use tools from topology. In this Review, we focus on topological defects and topologically protected edge modes, with an emphasis on the distinctive properties they acquire in active media. These paradigmatic examples represent two physically distinct classes of phenomena that are robust thanks to a common mathematical origin: the presence of topological invariants. Beyond active matter, our Review underscores the role of topological excitations in non-equilibrium settings of relevance, from open quantum systems to living matter.

Original languageEnglish
Pages (from-to)380-398
Number of pages19
JournalNature Reviews Physics
Volume4
Issue number6
Early online date6 May 2022
DOIs
Publication statusPublished - 30 Jun 2022

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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